21790226

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 36936000

約数和(自身を除く): 15145774

約数列:

[1, 2, 17, 19, 34, 38, 89, 178, 323, 379, 646, 758, 1513, 1691, 3026, 3382, 6443, 7201, 12886, 14402, 28747, 33731, 57494, 67462, 122417, 244834, 573427, 640889, 1146854, 1281778, 10895113, 21790226]

約数ペア:

[(1, 21790226), (2, 10895113), (17, 1281778), (19, 1146854), (34, 640889), (38, 573427), (89, 244834), (178, 122417), (323, 67462), (379, 57494), (646, 33731), (758, 28747), (1513, 14402), (1691, 12886), (3026, 7201), (3382, 6443)]